US88365A - Improvement in take-up mechanism for looms for weaving irregular fabrics - Google Patents

Description

UNITED STATES PATENT QEETQE.

Eueo cAEsTAEDE orv NEw YORK, N. r.A

IMPROVEMENT IN TAKE-UP MECHANISM FOR LOOMS FOR WEAVING IRREGULAR FABRICS.

Specification forming part of Letters Patent No. 88,365, dated March 30, 1869.

To all lwhom it may concern:

Be it known that I, HUGO CARSTAEDT, of the city and county of New York, State of New York, have invented certain new and useful Improvements in the Take-Up Mechanism of Looms adapted for Irregular or Corset Weaving; and I do hereby declare that the following is a full and exact description thereof.

The accompanying drawings form a part of this speciiication, and represent what I consider the best means of carrying out my invention. f

Figure l is a vertical section. Fig. 2 is a portion of a front view, part oil the loom being broken away to better show the interior. Fig. 3 represents a cross-section of a part on a larger scale. Figli: is a front view of a part.

Similar letters of reference indicate like parts in all the gures.

Referring to the drawings, B and C are rollers, continuously, but slowly, rotated by gearing, as indicated. The woven fabric (repre sented by my) is led under each of these, and between them and short rollers or wheels, which are peculiarly mounted below. The cloth is taken up or drawn forward by being pinched between the wheels D and the rollers B C, and the former are pressed up, so as to take hold ofthe cloth firmly, or are let down, so as toliloerat-e it, according as the work requires.. When all the wheels D are pressed up, the woven fabric is taken up uniformly over its whole breadth. When the rollers D on one side ofthe clot-h are pressed up, and the rollers D on the other side are allowed to remain depressed, the cloth will be taken up lonly on the side where the cloth is pinched.

The rollers D are mounted in pairs on the rods E. The rods E are supported on the adjusting-screws f in the levers F, which turn on a iixed cross-bar or knife-edge, G. The

Farms of the lever F are unequal, and the gravity of the longest arm tends to lift the rod E and the pair oi' wheels D mounted thereon.

So long as it is desired to take up the cloth,

the pair of wheels D is pressed up by the weight of the lever F with a yielding force, just sufficient to insure a correct peformance of the work, and which is self-adjusting, the lever tilting more or less, as may be required,

according to the varying thickness of' the cloth or the gradual wear or mal-adjustment of the parts. i j

When it is desired to liberate this partof the cloth, and' thus suspend the take-up action thereon, the heavy end of the lever F is lifted by the string H, operated by the jacquard or by other suitable means. After having been once lifted to the proper extent it is held up by the holder I, which turns on the center z', and receives the pointed end of the lever F in the hole t', and supports it, as will be obvious, so long as the parts are allowed to remain in this position, whether the string H be constantly strained or not.

So soon as it is desired to bring this part of the take-up mechanism again into play, the

string H is loosened, it' this has not been pre# viously done, and the holder I is tilted by a pull on the string J, which pull is edected by the jacquard, or by other suitable means.

The pull on the string J tilts the holder I, and releases the heavy and pointed end of the lever F, which immediately descends by gravity, and elevates the rod E and the corresponding pair of wheels D into tight contact with the cloth again, and the cloth, being now tightly pinched between the wheels D and the rollers B and G, commences to be taken up. of the wheels D, rods E, levers F, screws j',

`holders I,` and strings or cords H and J, with the corresponding jacquard mechanism properly arranged for operating them, I am able to take'up, in the weaving of corsets or other irregular work, with great certainty and precision.

K is a cross-bar immediately behind the roller C, and provided with a series oi' needles, k, in its lo'wer edge, which catch in the goods, and prevent its being drawn back under any circumstances when the take-up mechanism releases it. rlhe other portion of the mechanism will be understood without minute description.

The several part-s are sustained on the framework A, and the working parts of the loom, vother than the take-up, may be of anyapproved character. Those familiar with this kind of weaving need not be told that the jac quard mechanism for operating the warps must be arranged in harmony with the jacquard or By providing a sufficient number other mechanism for throwing off and on the several sections of the take-up; also, that the main take-up rollers B and G may be slowly turned by a great variety of gearing.

I prefer the mechanism represented, in which the lever L, operating the pawl L', is struck by each blow of the lay, and moved sufficiently to give a proper motion to the large ratchet-wheel represented on the end of the shaft B.

By providing an adjustment to determine how far these parts may return after each blow, the rate at which the take-up mechanism will operate when in action may be graduated with great nicety.

The let-off may be controlled by friction and weights, as represented; or there may be various modifications and refinements introduced therein. Inshort, my improved take-up may be used in connection with any kind of mechanism for performing the other parts of the work.

By arranging the parts of my take-up as herein shown, I ain able to perform the takeup operation very close to the line where the weaving is performed. I do not consider it ynecessary to leave more than three or four threads of the filling in sight behind the crossbar K. There should be just room to inspect the condition ofthe work. I esteem it important, in irregular weaving, to have the take-up as near as possible to the place where the weaving is performedin other words, to the line where the reed strikes the weft.

My needles 7c, arranged in a close series in the position represented, and inclined as represented, eft'ect all this, and also serve to guard the woven fabric against being drawn to one side or the other by the oblique and irregular tension of the take-up.

rIhe rollers B and C, as also the wheels D, may be uted, or otherwise roughened, if preferred; or they may be covered with rubber, or other strongly-frictional material. Power may be applied to the wheels D by any suitable connecting mechanism, if preferred, in any very nice work; but I consider it sufcient, in ordinary cases, to rotate the rollers B and C by power, and to leave the wheels D free.

It will be readily understood that the levers F drop, on being released from the holders I, to various extents, so as in every case to press with their full force strongly and evenly upon the cloth. In case the cloth is thicker or thinner, the levers F drop to a greater or less extent, and the wear of the center d, on which the wheels D turn, as also the wear of the point of the screw fand of the knife-edge G, is all compensated for by the greater descent of the lever F. Turning the screws f adjusts these levers at will, so as to keep them approximately together when their gravity is thus operating.

It will be seen that the construction of the holders I and the position of the centers i', on which they turn, causes their gravity to incline their tops forward, so as to promptly catch their respective levers F. Springs may be used to assist in place ofthe gravity of the holders I, if preferred. l

It will be observed that the position or arrangement of the movable sectional roller or series of rollers, D, in being pressed up to seize and take up the fabric at any point, seize the fabric, not alone by simply pinching it along' one line, but along two lines, one line being in the plane between the axes of the rolls D and B, and the other line being in the plane between the axes of the rolls D and C.

This duplication of the pinching increases the effect of the hold upon the goods, and tends to prevent slipping.

It will further be observed (and to this I attach much importance) that the movable rolls are pressed up partially between the rolls B and C, and thereby, by causing one to serve as an abutmentforthe other, givea greater pressure on the goods with a given force applied through the rods E than would be otherwise obtainable. The rolls B and G also serve, by this arrangement, as guides or supports for the rolls D, in front and rear, and avoid the necessity for other guides at or near the top.

Having now fully `described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows:

l. I claim the two rolls B and C, continuously rotating at a distance nearly equal to their diameters, and the series of sectional rollers or' wheels D, mounted and operated so as to be pressed wedgewise between them when the take-up is to act, all substantially as and for the purposes herein set forth.

2. I claim the inclined needles or points lc k, fixed on the stationary bar K, and arranged as specified, so that the fabric, in being drawn to the take-up proper, is continually drawn and pressed against the inclined points of the needles, so as to form an angle or deiiection of the material along such line, and to receive the points and be arrested when a reverse movement of any part of the fabric is commenced, substantially as herein set forth.

3. I claim a series of needles, 7c 7c, in combination with a take-up containing sectional rollers or wheels D, arranged and operated to take up at intervals on parts of the work, and to liberate other parts, as and for the purposes herein specified. n

4. I claim supporting the levers F by the holder I, and releasing them therefrom, as and for the purposes herein set forth.

HUGO CABSTAEDT.

Witnesses:

W. C. DEY, C. C. Livnves.

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